C# 自动模拟SUT
我已经阅读了MarkSeeman的文章,现在我正在根据这篇文章编写一个可重用的windsor容器 我对马克文章的实施(基本上是直接抄袭) 主要工作是在C# 自动模拟SUT,c#,unit-testing,castle-windsor,autofixture,automocking,C#,Unit Testing,Castle Windsor,Autofixture,Automocking,我已经阅读了MarkSeeman的文章,现在我正在根据这篇文章编写一个可重用的windsor容器 我对马克文章的实施(基本上是直接抄袭) 主要工作是在AutoMoqResolver类中完成的。这将在类依赖于接口时提供模拟: public class AutoMoqResolver : ISubDependencyResolver { private readonly IKernel kernel; public AutoMoqResolver(IKernel kernel)
AutoMoqResolver
类中完成的。这将在类依赖于接口时提供模拟:
public class AutoMoqResolver : ISubDependencyResolver
{
private readonly IKernel kernel;
public AutoMoqResolver(IKernel kernel)
{
this.kernel = kernel;
}
public bool CanResolve(
CreationContext context,
ISubDependencyResolver contextHandlerResolver,
ComponentModel model,
DependencyModel dependency)
{
return dependency.TargetType.IsInterface;
}
public object Resolve(
CreationContext context,
ISubDependencyResolver contextHandlerResolver,
ComponentModel model,
DependencyModel dependency)
{
var mockType = typeof(Mock<>).MakeGenericType(dependency.TargetType);
return ((Mock)this.kernel.Resolve(mockType)).Object;
}
}
public class AutoMockInstaller<T> : IWindsorInstaller
{
public void Install(
IWindsorContainer container,
IConfigurationStore store)
{
container.Kernel.Resolver.AddSubResolver(
new AutoMoqResolver(container.Kernel));
container.Register(Component.For(typeof(Mock<>)));
container.Register(Classes
.FromAssemblyContaining<T>()
.Pick()
.WithServiceSelf()
.LifestyleTransient());
}
}
然后,我的容器只需运行安装程序,就可以为单元测试中的任何接口依赖项自动提供模拟:
public class AutoMockContainer<T> : WindsorContainer
{
public AutoMockContainer()
{
// simply run the auto-mock installer
this.Install(new AutoMockInstaller<T>());
}
}
我的测试模式
因此,为了验证PerformTask()
方法是从DoSomethingWithAjax()
或DoSomethingWithAjax()
调用的,我定义了一个新的TestableExampleController
类,如下所示:
public class TestableExampleController : ExampleController
{
public TestableExampleController(IService service) : base(service)
{
}
public virtual void PerfomTaskPublic()
{
base.PerfomTask();
}
protected override void PerformTask()
{
this.PerformTaskPublic();
}
}
然后,我可以使用TestableExampleController
作为我的SUT,以便通过以下测试:
[TestMethod]
public void DoSomethingAjax_Calls_PerformTask()
{
//// Arrange
// create a mock TestableExampleController
var controllerMock = new Mock<TestableExampleController>();
controllerMock.CallBase = true;
// use the mock controller as the SUT
var sut = controllerMock.Object;
//// Act
sut.DoSomethingAjax();
//// Assert
controllerMock.Verify(x => x.PerformTaskPublic(), Times.Once());
}
[TestMethod]
public void Run_Calls_DoSomethingProtected()
{
//// Arrange
// AutoMoqCustomization allows AutoFixture to
// be used an an auto-mocking container
var fixture = new Fixture().Customize(new AutoMoqCustomization());
// simply ask the fixture to create a mock
var sutMock = fixture.Create<Mock<TestableDummySystem>>();
//// Act
// exercise the mock object
sutMock.Object.Run();
//// Assert
// this verification passes!
sutMock.Verify(x => x.DoSomethingProtectedPublic());
}
测试无法创建Mock
的实例,因为它找不到无参数构造函数
无法实例化类MyNamespace.TestableExampleController的代理。
找不到无参数构造函数。
参数名称:构造函数参数
我提出的解决方案
理想情况下,我希望实现一个包装器类,该类可以注册到容器中,以自动为任何组件提供模拟:
public class ComponentWrapper<T> where T : class
{
public ComponentWrapper(Mock<T> componentMock)
{
componentMock.CallBase = true;
this.ComponentMock = componentMock;
}
public Mock<T> ComponentMock { get; private set; }
public T Component
{
get { return this.ComponentMock.Object; }
}
}
公共类组件包装器,其中T:class
{
公共组件包装器(Mock componentMock)
{
componentMock.CallBase=true;
this.ComponentMock=ComponentMock;
}
公共模拟组件Mock{get;private set;}
公共T组件
{
获取{返回this.ComponentMock.Object;}
}
}
我希望能够编写以下通过的测试:
[TestMethod]
public void DoSomethingAjax_Calls_PerformTask()
{
//// Arrange
// create a container
var container = new AutoMockContainer<TestableExampleController>();
// resolve a ComponentWrapper using the container
var wrapper = container.Resolve<ComponentWrapper<TestableExampleController>>();
//// Act
// call a method using the component
wrapper.Component.DoSomethingAjax();
//// Assert
// verify a method call using the mock
wrapper.ComponentMock.Verify(x => x.PerformTaskPublic(), Times.Once());
}
[TestMethod]
public void DoSomethingAjax_Calls_PerformTask()
{
////安排
//创建一个容器
var container=new AutoMockContainer();
//使用容器解析ComponentWrapper
var wrapper=container.Resolve();
////表演
//使用组件调用方法
wrapper.Component.DoSomethingAjax();
////断言
//使用mock验证方法调用
wrapper.ComponentMock.Verify(x=>x.PerformTaskPublic(),Times.Once());
}
我无法完全理解如何实现这一点,我花了一天的大部分时间来摆弄新的ISubDependencyResolver实现,但我就是无法实现这一点
希望我的问题很清楚,答案其实也相对简单?事实证明,AutoFixture.AutoMoq能做我想做的事情,所以感谢TrueWill为我指明了正确的方向 以下简单测试将通过:
[TestMethod]
public void DoSomethingAjax_Calls_PerformTask()
{
//// Arrange
// create a mock TestableExampleController
var controllerMock = new Mock<TestableExampleController>();
controllerMock.CallBase = true;
// use the mock controller as the SUT
var sut = controllerMock.Object;
//// Act
sut.DoSomethingAjax();
//// Assert
controllerMock.Verify(x => x.PerformTaskPublic(), Times.Once());
}
[TestMethod]
public void Run_Calls_DoSomethingProtected()
{
//// Arrange
// AutoMoqCustomization allows AutoFixture to
// be used an an auto-mocking container
var fixture = new Fixture().Customize(new AutoMoqCustomization());
// simply ask the fixture to create a mock
var sutMock = fixture.Create<Mock<TestableDummySystem>>();
//// Act
// exercise the mock object
sutMock.Object.Run();
//// Assert
// this verification passes!
sutMock.Verify(x => x.DoSomethingProtectedPublic());
}
[TestMethod]
public void Run_Calls_DoSomethingProtected()
{
////安排
//AutoMoqCustomization允许AutoFixture
//用于自动模拟容器
var fixture=new fixture().Customize(new AutoMoqCustomization());
//只需让夹具创建一个模拟
var sutMock=fixture.Create();
////表演
//练习模拟对象
sutMock.Object.Run();
////断言
//这个验证通过了!
验证(x=>x.DoSomethingProtectedPublic());
}
这可能会有所帮助:如果您对使用AutoFixture没有问题,您可能需要添加AutoFixture标记。你好,尼克,我做了一些与Rhino Mock类似的操作。我没有这里的代码,但我记得我使用了一个懒惰的组件加载程序。这样,您可以在请求任何依赖项时注册它们。因此,您可以查看这是否适用于您,而不是子依赖解析程序。